Option #2, inventing weaknesses, is most common because it is the easiest to do. For example, ``Linux is unsupported hacker-ware.'' This also is the reason why FUD option #2 is the least effective method for creating FUD - it is too easily countered (for example, to counter that particular FUD all you have to say is ``see http://www.caldera.com for per-incident support and support contracts''). FUD option #2 is thus most often used with FUD options #1 and #3 in hopes that its status as an outright fabrication will be masked by the particles of truth oozing over from the sandwiching material.